Magnetic Moment of a Current Loop
Magnetic Moment of a Current Loop: Overview
This topic covers concepts, such as, Magnetic Dipole, Magnetic Dipole Moment, Magnetic Moment of a Rotating Charged Hollow Cylinder & Magnetic Moment of a Rotating Charged Solid Cylinder etc.
Important Questions on Magnetic Moment of a Current Loop
A nonconducting disc of radius is rotating about an axis, passing through its centre and perpendicular to its plane, with an angular velocity . Charge is distributed uniformly over its surface. The magnetic moment of the disc is

charge is uniformly distributed over the curve surface of a right circular cone of semi-vertical angle and height . The cone is uniformly rotated about its axis at angular velocity . Calculate associated magnetic dipole moment.

A square current carrying loop made of thin wire and having a mass m = 10g can rotate without friction with respect to the vertical axis passing through the centre of the loop at right angles to two opposite sides of the loop. The loop is placed in a homogeneous magnetic field with an induction directed at right angles to the plane of the drawing. A current I = 2A is flowing in the loop. Find the period of small oscillations that the loop performs about its position of stable equilibrium.

What is value of bohr magneton?

In Bohr's hydrogen like atom magnetic dipole moment in orbit is expressed as.

When charged particle moves in circle then vectorial representation of magnetic dipole moment is ( if is angular momentum)

An electron revolves around the nucleus of hydrogen like atom then magnetic moment of electron is

A nonconducting disc of radius is rotating about an axis, passing through its centre and perpendicular to its plane, with an angular velocity . Charge is distributed uniformly over its surface. The magnetic moment of the disc is

A charge is spread uniformly over an insulated loop of radius . If it is rotated with an angular velocity with respect to the normal axis then a magnetic moment of the loop is:

A magnetic wire of dipole moment is bent in the form of semicircle. The new magnetic moment is

The magnetic dipole moment of current loop is independent of

A circular loop and a square loop are formed from two wires of same length and cross-section. Same current is passed through them. Then the ratio of their dipole moments is

A square loop is carrying a steady current and the magnitude of its magnetic dipole moment is . If this square loop is changed to a circular loop and it carries the same current, the magnitude of the magnetic dipole moment of circular loop will be:

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole Which configuration has highest net magnetic dipole moment?

A wire of length metre carrying a current of ampere is bent in the form of a circle. Its magnitude of the magnetic moment will be:

A circular coil of turns and diameter carries a current of . Magnitude of the magnetic dipole moment associated with the coil is

The magnetic dipole moment of a current loop is independent of

A circular coil of turns and diameter carries a current of . Magnitude of the magnetic dipole moment associated with the coil is

Magnetic moment associated with the solenoid-

A circular loop has a radius of and it is carrying a current of . Its magnetic moment is,
